26 results about "Sorel cement" patented technology

The application discloses a kind of concrete crack self-repairing agent suitable for marine corrosion conditions, including component one and component two;The component one, component two are all core-shell structure;The outer shell of component one is polymer film;Inner layer includes the following components by mass percentage: 20%-30% barite powder, 50%-60% magnesium source, 20%-30% cement;The outer shell of component two is polymer film;Inner layer includes the following components by mass percentage: 20-30% barite powder, 5-10% microbial powder, 20-30% glucose, 20%-40% aluminum source, 10%-30% low-alkali cement.The repairing agent of the application is continuous grading solid particle pellet, and the fine aggregate of concrete is replaced with equal mass.By the synergistic effect of microbial mineralization and metal mineral hydration, the filling of concrete crack space and the solidification of invasive crack corrosion ions are realized, especially suitable for marine corrosion environment.

The invention relates to the technical field of wastewater treatment, in particular to an advanced treatment process for fluorine, mercury and chromium in electronic wastewater. The deep purification of fluorine, mercury and chromium is realized through the pretreatment of nano zero-valent iron and sodium hydrogen sulfite and the combined action of Sorel cement, sulfenyl functional activated carbon, FeSO and nano TiO2 and ultraviolet light. The F <-> adsorption capacity is increased to 50mg / g by the modified alumina and the three-dimensional zeolite, and the concentration of F <-> is ensured to be less than or equal to 10mg / L by combining CaF2 precipitation; the sulfur-based functionalized activated carbon directionally adsorbs Hg < 2 + > through-SH groups, and complexed chromium is degraded by combining photocatalysis, so that the residual Hg < 2 + > is less than or equal to 0.001 mg / L, the total chromium is less than or equal to 1.5 mg / L, and the emission standard is comprehensively met.

The invention relates to the technical field of sewage treatment, and particularly discloses a biological iron sulfide filler capable of synchronously removing nitrogen and phosphorus and a preparation method of the biological iron sulfide filler. The biological iron sulfide filler comprises 38-45% of biological sulfur, 24-39% of reduced iron powder, 20-25% of low-alkali cement (P.O42.5) and 3-6% of sodium silicate. The specific preparation method comprises the following steps: step 1, preparing raw materials according to a ratio: sieving the reduced iron powder and the biological sulfur by a 200-mesh sieve, and uniformly mixing the reduced iron powder, the biological sulfur and the low-alkali cement according to a ratio to form an ash material; 2, sodium silicate is dissolved in deionized water, and an adhesive solution is obtained; 3, uniformly mixing 50% of the ash material and the adhesive to obtain a modifier; step 4, starting a granulator, adding a modifier, uniformly spraying an adhesive solution to wet the surface of the modifier when the granulator runs, gradually adding the residual ash material, and forming 7-9mm spherical filler after the surface is uniformly attached; and 5, putting the mixture into a 85 DEG C constant-temperature drying box for 4 hours, then taking out, and naturally curing for 7 days at 25 DEG C to obtain the biological ferrous sulfide filler.

The invention discloses a solid-waste-based mine filling material as well as a preparation method and a use method thereof, and relates to the field of mine filling. The solid waste-based mine filling material comprises the following components in percentage by weight: 20-50% of tailings, 10-30% of slag, 10-30% of modified fly ash, 5-15% of phosphogypsum, 5-10% of sodium carbonate, 5-10% of cement and 1-10% of a foaming agent. Wherein a copolymer of PVA, polyacrylate or vinyl acetate and acrylate is formed on the surface of the modified fly ash. By implementing the method disclosed by the invention, bleeding of the solid-waste-based mine filling material can be greatly reduced, free adjustment of the density of the solid-waste-based mine filling material can be realized, and the consumption of cement and other components is reduced. Meanwhile, the dry shrinkage resistance and the freezing and thawing resistance of a filling body formed by the solid waste-based mine filling material are also improved.

The utility model discloses a ball mill partition plate mounting structure for low-alkali cement production, which relates to the technical field of ball mills, and comprises a mounting frame arranged in a ball mill, a plurality of partition plates, a central disc and a plurality of bolts, the central disc is arranged in the center of the mounting frame, the mounting frame is an annular plate, and a plurality of fan-shaped openings corresponding to the bin partition plates are uniformly formed in the annular plate; the outer limiting block and the inner limiting block are respectively inserted into the outer limiting groove and the inner limiting groove, and are matched with fixation of the bolt, so that force in the circumferential direction generated by materials on the bin separation plate can be well overcome, the possibility of loosening of the bolt is reduced, the stability of the bin separation plate during working is ensured, and the service life is prolonged.

A variety of methods, systems, and compositions are disclosed, including, in one embodiment, a cement composition comprising an alkaline earth metal oxide, a soluble salt, a water-proofing agent comprising a divalent cation carbonate coated with fatty acid, and water. In other embodiments, the cement composition is introduced and allowed to set in a subterranean formation.

This invention discloses a microbial self-healing bio-aggregate, belonging to the field of concrete material technology. It is composed of microorganisms, low-alkali cement, synergistic repair components, and nano-active fillers. The microorganisms are *Bacillus pasteurellii*, the low-alkali cement is sulfoaluminate cement, the synergistic repair components include urea as a metabolic substrate and organic calcium salts as an external calcium source, and the nano-active fillers are nano-silica or nano-calcium carbonate. The internal pore pH value of the low-alkali cement stone is 9.0 to 11.0. When the bio-aggregate is incorporated into concrete as a functional aggregate and cracks form along with the concrete, and water enters the cracks, the microorganisms inside the low-alkali cement stone react with the synergistic repair components under the influence of water, forming mineralized deposits at the crack locations to achieve crack repair.

The invention relates to the technical field of cement-based building material admixtures, in particular to a water reducing agent for high-alkali cement and a preparation method of the water reducing agent. Ethylene glycol monovinyl polyglycol ether is adopted as a macromonomer, and a functional monomer and an alcohol amine modified monomer are prepared to improve the structure of the water reducing agent; a redox system is adopted for polymerization reaction at normal temperature, the prepared water reducing agent is good in adaptability to high-alkali cement and high in water reducing and collapse preventing capacity, the strength of concrete is not affected, and the preparation process is low in energy consumption, efficient and rapid.

The invention relates to an alkali efflorescence-resistant cement-based decorative mortar and a preparation method thereof. The alkali efflorescence-resistant cement-based decorative mortar is mainly prepared from the following components in parts by mass: # imgabs0 # cellulose A is hydroxypropyl methyl cellulose with the viscosity of 2000-3000; and the cellulose B is hydroxypropyl methyl cellulose with the viscosity of 60000 to 80000. The cement-based decorative mortar overcomes the defects that only a water repellent is added in an existing cement-based decorative mortar system, and the saltpetering-resistant effect is poor, and the cement-based decorative mortar has good saltpetering resistance through the synergistic effect of the active filler metakaolin, two preferred types of cellulose and a small amount of water repellent and the cooperation with other preferred types and dosage proportions of components in the system.

The utility model discloses a low-alkali cement grinding machine with multiple grinding effects, which relates to the technical field of low-alkali cement grinding machines, and comprises a grinding machine body, grinding rollers, a material guide plate, a filling port, a discharge port and a sieve plate, and the grinding rollers which are symmetrically distributed are arranged in the grinding machine body. According to the low-alkali cement grinding machine with the multiple grinding effects, materials can be conveyed into the material guiding box through the material guiding box, then a first driving motor is started, the materials can be refilled through a discharging plate, and the low-alkali cement grinding machine can have the good multiple grinding effects when used; according to the anti-blocking device for the low-alkali cement grinding machine, the rotating rod connected with the output end can rotate the material mixing rod arranged on the surface, along with rotation of the material mixing rod, the low-alkali cement grinding machine can be prevented from being blocked due to too fast filling during use, and therefore the low-alkali cement grinding machine can have a good anti-blocking effect during use.

This application relates to the field of building decoration materials, particularly a two-component waterproof natural stone paint and its preparation method. The two-component waterproof natural stone paint comprises components A and B. Component A comprises the following raw materials in weight percentage: 30-40% pure acrylic emulsion, 1-5% pigment, 0.2-1% wetting and dispersing agent, 0.2-1% defoamer, 0.2-2% thickener, 0.1-1% pH adjuster, 0.1-0.2% bactericide and preservative, 0.5-2% film-forming aid, 40-60% aggregate, and the balance water; component B is low-alkali cement; and the weight ratio of components A to B is (9.5-10.5):1. The resulting coating has a water absorption as low as 1.02-0.01 g / 2h, a water resistance of 290-420h, and an alkali resistance of 102-120h.

The invention relates to the technical field of masonry cement, and particularly discloses low-alkali masonry cement with high fly ash content and a preparation method of the low-alkali masonry cement. The low-alkali masonry cement is mainly prepared from the following raw materials in parts by weight: 55-65 parts of low-alkali cement clinker, 35-45 parts of fly ash, 4-6 parts of modified calcium sulfate whiskers, 2-4 parts of redispersible latex powder, 3-5 parts of desulfurized gypsum, 0.3-0.7 part of a retarder and 0.3-0.7 part of an early strength agent. The modified calcium sulfate whiskers are obtained by treating calcium sulfate whiskers with chitosan, starch sodium octenylsuccinate and sodium trimetaphosphate. According to the low-alkali masonry cement, the fly ash is recycled, the resource utilization rate is increased, the low-alkali masonry cement has the advantages of high compressive strength, high breaking strength and good cracking resistance, the durability is improved, the service life is prolonged, and market requirements are met.

Methods of manufacturing oxalic acid from lignocellulosic biomass and use of the manufactured oxalic acid the acidic activator in a new-concept, acid-base cement (ABC) are disclosed.

The invention discloses a low-alkali cement-based aqueous metal ion electrode which is prepared by the following steps: fully mixing conductive organic polymer powder, low-alkali cement-based material powder and conductive agent powder to obtain a positive electrode mixture; wherein the low-alkali cement-based material powder is composed of a calcareous raw material, a clay raw material and correction raw material powder; adding a solvent into the positive electrode mixture, and fully mixing and stirring to obtain electrode slurry; the electrode slurry is placed in an electrode mold for a hydration reaction, and the low-alkali cement-based water-based metal ion electrode is prepared; the low-alkali cement-based battery positive electrodes with different compressive strength and electrochemical properties are obtained by adjusting the solvent addition amount, the hydration reaction temperature and the hydration reaction time, and the battery is assembled; the compressive strength of the obtained organic polymer combined low-alkali cement electrode is not lower than 1 MPa; the specific capacity of the battery electrode is not less than 10mAh / g, the battery electrode can be stably circulated for more than 2000 times, and the whole life cycle of the cement material can be basically covered by calculating the charge-discharge cycle time.

The utility model discloses a rapid detection device for low-alkali cement, which is applied to the technical field of cement detection and comprises a working table, a support is bolted at the top of the working table, a flue gas purification device is bolted at the top of the support, and a cement detector body bolted with the working table is arranged between the working table and the support. And the isolation cover slides downwards to cover the surface of the smoke outlet, so that white smoke is prevented from being mixed with external air, the extraction effect of the white smoke is guaranteed, and omission is avoided. And meanwhile, when the isolation cover is reset, the threaded pipe can be inserted and sealed through the sealing plug, and white smoke is prevented from backflow. And the sliding frame is driven to slide downwards through the elastic force of the spring, so that the filter screen is tightly pressed at the top of the smoke outlet, and discharged white smoke is filtered. And other impurities such as cement dust are prevented from entering the smoke extraction pipe to block the interior of the smoke extraction pipe, the white smoke extraction efficiency is guaranteed, and practicability is improved.

The invention provides a heat-insulating and resistance-reducing pipeline anticorrosive coating as well as a preparation method and application thereof, and belongs to the technical field of building coatings. The heat-insulating and resistance-reducing anticorrosive paint for the pipeline comprises a component A and a component B, wherein the component A is prepared from the following raw materials: fluorine-containing polymer emulsion, high-temperature-resistant resin emulsion, polysiloxane emulsion, petroleum resin emulsion, a polydimethylsiloxane flatting agent and a defoaming agent; the component B is prepared from the following raw materials: zinc powder, glass flakes, hollow glass beads, superfine low-alkali cement, nano silicon dioxide aerogel, aluminum oxide ceramic powder, graphene powder, triisopropanolamine powder and aluminum powder. The heat-insulation and resistance-reduction pipeline anticorrosive paint provided by the invention has the three functions of heat insulation, resistance reduction and corrosion prevention, each function far exceeds the performance index of a traditional single paint, and when the heat-insulation and resistance-reduction pipeline anticorrosive paint is applied to a metal pipeline, the resistance of pipeline liquid conveying can be remarkably reduced, the heat loss of the pipeline is reduced, and the service life of the pipeline is prolonged. The anti-corrosion performance of the metal pipeline is improved.

The present invention relates to the field of building materials, and in particular to a low-alkali, high-strength, crack-resistant, frost-resistant and cold-resistant concrete suitable for plateau areas and a preparation method thereof. The concrete is calculated by weight and includes: 140-180 parts of low-alkali reinforced silicate cement, 275-360 parts of coarse aggregate, 450-580 parts of fine aggregate, 40-60 parts of silicon micropowder, 15-35 parts of lignin fiber, 1.8-3.6 parts of high-efficiency water reducer and 100 parts of water. The present invention prepares a concrete suitable for plateau areas, which is prepared by using low-alkali reinforced silicate cement as a main ingredient. Compared with traditional low-alkali cement, the low-alkali reinforced silicate cement prepared by the present invention is applied to concrete, which is not only higher in strength, but also more resistant to cracking, and has better cold and frost resistance.

The purpose of the present invention is to create a Sorel cement cured product in which magnesium carbonate is blended with Sorel cement and to provide a carbon-negative Sorel cement cured product that can be utilized effectively in terms of strength, setting time, and / or water resistance. Provided is a Sorel cement cured product (SCMC) in which magnesium carbonate (MC) is blended with Sorel cement (SC), wherein the blend ratio of magnesium carbonate in the magnesium-carbonate-blended Sorel cement cured product (SCMC) is 10-35 wt% relative to the total weight of Sorel cement (SC) and magnesium carbonate (MC).

The invention relates to the field of building decoration materials, in particular to a two-component waterproof real stone paint and a preparation method thereof. The double-component waterproof real stone paint comprises a component A and a component B, wherein the component A comprises the following raw materials in percentage by weight: 30-40% of pure acrylic emulsion, 1-5% of pigment, 0.2-1% of a wetting dispersant, 0.2-1% of a defoaming agent, 0.2-2% of a thickening agent, 0.1-1% of a pH regulator, 0.1-0.2% of a bactericidal preservative, 0.5-2% of a coalescing agent, 40-60% of aggregate and the balance of water; the component B is low-alkali cement; the weight ratio of the component A to the component B is (9.5-10.5): 1. The water absorption capacity of the obtained coating is as low as 1.02-0.01 g / 2 h, the water resistance can reach 290-420 h, and the alkali resistance can reach 102-120 h.

The application relates to the technical field of cement-based building material admixtures, in particular to a water reducing agent for high-alkali cement and a preparation method thereof. The water reducing agent is prepared by adopting ethylene glycol monovinyl polyethylene glycol ether as a macromonomer, and a functional monomer and an alcohol amine modified monomer are prepared to improve the structure of the water reducing agent, and a redox system is used for polymerization reaction at normal temperature. The prepared water reducing agent is good in adaptability to high-alkali cement, high in water reducing and slump retaining capacity, does not affect the strength of concrete, and is low in energy consumption and efficient and fast in preparation process.

The invention belongs to the technical field of cement-based materials, and particularly relates to an auxiliary determination method for carbonization performance of a cement-based material. Comprising the following steps: (1) mixing thymol blue and a sodium hydroxide solution, adding water for dilution, and uniformly stirring to obtain a carbonization determination reagent; the use amount of the sodium hydroxide solution is 3-5 mL by taking the use amount of thymol blue as 1 g, and the step of diluting by adding water is that water is added to dilute to 500-1000 mL; (2) drying the cement-based material, and grinding the cement-based material into powder to obtain a to-be-tested sample; (3) adding a to-be-tested sample into the carbonization determination reagent, and soaking for a period of time to obtain a mixed solution; and (5) judging whether the cement-based material is carbonized or not according to the color of the mixed solution. The determination method can be used for auxiliary determination of carbonized and uncarbonized samples of a low-alkalinity cementing material system sample, solves the problem of unobvious color development of a low-alkalinity cement-based material through traditional phenolphthalein titration, can be used for determination through colors, and is simple and practical.

The application discloses a slow-release high-alkali cement reinforcing agent and a preparation method and application thereof, wherein thiocyano benzoic acid and polyol amine are mixed in a reaction kettle, stirring is carried out under nitrogen protection, and temperature is raised to 160-180 DEG C; a catalyst and a water-carrying agent are added, stirring is carried out, and temperature is raised to 180-200 DEG C; esterification reaction is carried out for 5-10 h; water generated in the reaction is separated during the reaction; the reaction is ended until no water is generated any more; unreacted materials are removed through purification treatment; and the slow-release high-alkali cement reinforcing agent is obtained. According to the hydration characteristics of high-alkali cement, the organic molecular structure designability is utilized, the high-alkali cement reinforcing agent which can efficiently promote the hydration of iron aluminate tetra calcium and simultaneously release and enhance is synthesized, the obtained product has low mixing amount, does not need to be compounded and can be directly used, and the strength of high-alkali cement, especially the later strength, is remarkably improved.

The invention relates to the technical field of building wall materials, and particularly discloses a cold-formed thin-walled steel light polymer composite wallboard with crack resistance and thermal insulation performance, which comprises a cold-formed thin-walled steel skeleton and an enhanced light polymer filler filled in the cold-formed thin-walled steel skeleton, the enhanced light polymer filler is prepared from the following components in parts by weight: 32 to 36 parts of low-alkali cement, 9 to 13 parts of metakaolin, 16 to 21 parts of modified closed cell perlite, 9 to 13 parts of hollow glass beads, 1.8 to 2.6 parts of epoxy modified basalt fiber and 0.4 to 0.9 part of graphene oxide. A composite base material is constructed through low-alkali cement and metakaolin, modified closed cell perlite and hollow glass beads are matched to form a two-stage thermal insulation aggregate, and by combining the elastic buffering effect of a polycaprolactone glycol modified polyurethane prepolymer and the self-repairing function of urea-formaldehyde resin coated epoxy resin microcapsules and an amine latent curing agent, the thermal insulation performance of the composite base material is improved. And the effect of collaborative optimization of heat preservation and crack resistance is achieved.

The utility model relates to the technical field of low-alkali cement alkali content detection, in particular to a low-alkali cement alkali content detection device which comprises a measuring instrument, a probe and a storage device, the probe is installed on the surface of the measuring instrument, the storage device is arranged on the surface of the measuring instrument, the storage device comprises a storage box, the storage box is installed on the surface of one side of the measuring instrument, and the probe is arranged on the storage box. The surface of the storage box is rotationally connected with a supporting strip, the surface of the supporting strip is slidably connected with sliding rods, the two sliding rods are symmetrically arranged, the top ends of the two sliding rods are fixedly connected with a pushing strip, and a pulling spring is fixedly connected between the pushing strip and the supporting strip. Through the arrangement of the storage device, a worker can use or store the probe of the detection device effectively and conveniently, when the worker stores or uses the detection device, the storage device is adjusted, the situation that the worker needs to spend a large amount of time to disassemble the probe when storing the detection device is avoided, and the practicability of the detection device is improved; the assistance of the detection device is improved, and the convenience of the detection device is improved.

The utility model relates to the technical field of cement processing, and particularly discloses a low-alkali cement processing device which is characterized in that a first bevel gear is fixedly mounted on the side wall of a rotating shaft, a second bevel gear is meshed with the side wall of the first bevel gear, and a connecting rod is fixedly mounted at one end, away from the first bevel gear, of the second bevel gear; the side wall of the missing gear is meshed with a rack frame, the side wall of the rack frame is fixedly provided with a mixing barrel, the rotating shaft drives the first bevel gear to rotate clockwise, the first bevel gear drives the second bevel gear to rotate anticlockwise, and the second bevel gear drives the connecting rod to rotate anticlockwise. The connecting rod drives the notched gear to rotate anticlockwise, the notched gear drives the rack frame to move up and down in a reciprocating mode, the rack frame drives the mixing barrel to move up and down in a reciprocating mode, and when the mixing barrel moves from top to bottom, the interior of the stirring funnel brings cement and additives at the bottom to the upper portion, so that the function of rapidly and evenly mixing the cement and the additives is achieved.

The present invention relates to the technical field of wastewater treatment, specifically to a deep treatment process for fluorine, mercury and chromium in electronic wastewater. Through the pretreatment of nano zero-valent iron + sodium bisulfite, the combined action of Sorel cement + sulfur-functionalized activated carbon + FeSO₄ and nano-TiO₂ + ultraviolet light, the deep purification of fluorine, mercury and chromium is realized. Modified bauxite and three-dimensional zeolite increase the F ‑ adsorption capacity to 50 mg / g, combined with CaF₂ precipitation, to ensure that the F ‑ concentration ≤ 10 mg / L; sulfur-functionalized activated carbon directionally adsorbs Hg 2+ through -SH groups, combined with photocatalytic degradation of complex chromium, to make the Hg 2+ residue ≤ 0.001 mg / L and the total chromium ≤ 1.5 mg / L, fully meeting the discharge standards.